Excelsior-cutting machine.



W. A. WALKER.

EXCELSIOR CUTTING MACHINE.

APPLICATION FILED JULY 3,1914.

Patented June 1, 1915.

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APPLICATlON FILED JULY 3.1914.

Patented June 1, 1915.

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WILLIAM A. WALKER, OIE ENTERPRISE, MISSISSIPPI.

EXCELSIUIWCUTTING MACHINE.

menace.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed July 3, 1914. Serial No. 848,869.

To all whom it may concern:

Be it known that 1, WILLIAM A. WALKER, a citizen of the United States,residing at Enterprise, in the county of Clarke and State ofMississippi, have invented certain new and useful Improvements inExcelsior- Cutting Machines, of which the following is a specification,reference being had to the accompanying drawings.

This invention relates to an improved eX- celsior cutting machine, andhas for its primary object to provide improved means for quickly cuttinga number of wood blocks into fine shreds 0r excelsior.

The invention has for a more specific object to provide a rotary diskprovided with a plurality of shredding bits and cutting blades, andblock feeding means arranged upon opposite sides of the disk shaft,whereby the respective blocks are operated upon in the downward movementof the cutters upon one side of said shaft, and in their upward movementupon the other side thereof.

The invention has for a still further 'ob ject to provide improved meansfor mounting the wood blocks in position, and means carried by the diskand cooperating with a block feeding roller to progressively feed theblock to the cutting knives in the rotation of the disk.

The invention has for still another object to generally improve andsimplify the construction of machines of the above character whereby thesame are rendered very durable and serviceable in practical use andcapable of being manufactured at comparatively small cost.

With the above and other objects in view, the invention consists in thenovel features of construction, combination, and arrangement of parts aswill be hereinafter referred to and more particularly pointed out in thespecification and claims.

For a full understanding of the invention, reference is to be had to thefollowing description and accompanying drawings, in which Figure 1 is aside elevation of an eXoelsior cutting machine embodying my invention inits preferred form; Fig. 2 is an elevation looking toward the cuttingface of the disk; Fig. 3 is a top plan view; Fig. 1 is a verticalsection taken on the line 44L of Fig. 2; Fig. 5 is an enlarged detailperspective view of one of the block holders; and Fig. 6

struction, and in the same the angularly disposed adjustable cuttingblades 10 are removably mounted, said blades being held in theiradjusted positions by a clamp holder 11.

12 designates the shredding bits which are arranged in the castings 9 inspaced relation to the cutting edges of the blades 10. The bit blocksare provided upon their ends with studs 13 for movement in the channelsor grooves 14 provided in opposite edges of the castings. A spring 15normally acts to force the shredding bit outwardly so as to dispose theshredding teeth 16 thereof be yond the face of the rotary disk. Thesecastings may be secured to the disk by means of bolts indicated at 17 orin any other preferred manner.

18 designates a tire or rim secured upon the periphery of the disk whichis provided with gear teeth 19. Upon the face of the rotary disk aseries of radially disposed teeth 20 is mounted, the purpose of whichwill be hereinafter explained. The disk is driven by a gear 21 whichmeshes with the gear teeth 19.

Upon one side of the disk shaft 6 and adjacent to the face of the diskfrom which the cutting edges of the blades 10 protrude, spaced pairs ofstandards or supports 22 are mounted. A lower longitudinally groovedroller 23 has its shaft 24 journaled in fixed bearings 25 securedbetween the respective pairs of standards. An upper roller 26 which isalso longitudinally grooved has its shaft 27 mounted in the movablebearings 28 arranged between said standards. Bolts 29 are connected tothese latter bearings and extend upwardly through guides 30 arrangedbetween the upper ends of the standards 22. Coil springs 81 on saidbolts operate to normally force the roller bearings 28 downwardly. Uponone end of the shaft 26, a pinion roller 32 is fixed.

Upon one pair of the standards 22 a vertical shaft 34 is mounted inspaced bearing A brackets 35. The upper 'and lower ends of this shaftare equipped with bevel gears 36 and 37 respectively, and a similar gear38 on the upper roller shaft 37 meshes with the gear 36, while the gear39 fiXed on the lower. shaft 23 engagesthe gear 37. To the ends of theupper roller shaft'27 the extremities of a horizontally disposed U-shaped rod 33 are connected. Upon a suit- 1a able support 40 a racksegment 41 is secured on which the lower end of a lever 42 i isfulcrumed. This lever is connected to the central portion of the rod 33.It will be obvious that by simply manipulating the lever 42, the upperroller 26 may be elevated against the action of the springs 31 so that awood block indicated at W may be inserted between the spaced groovedrollers 23 and 26. The lever 42 is, of course,

equipped with the usual spring pressed dog for engagement with the teethof the rack 41, whereby the lever may be locked against movement. Asabove stated, this block holder is arranged upon one side of the diskshaft 6 and the rollers 23 and 26 are so disposed with respect to saidshaft that the block will be held in position to be operated upon by thecutting knives.

Upon the opposite side of the disk shaft 6, a second block holder isarranged, which,

also will support a block in position for engagement by the cuttingknives. This latter holder includes a bar 44 which is pivoted at itslower end asshown at 45 upon a floor 85 plate. The upper end of this baris angularly disposed and formed with a longitudinally extending socket46. At the lower end of said socket a laterally projecting blocksupporting lug 47 is formed upon said bar.

5 40 A short bar 48 is vertically movable in the socket 46 and isprovided upon its upper end with a block clamping or gripping lug 49.Immediately below the supporting lug 47 on said bar a roller 50 ismounted, the 4 axis of said roller being disposed beyond the end of saidlug. Upon the pivotally mounted bar 44 an arm 51 is secured, in theupper end of which the lever 52 is fulcrumed. One end of this lever isconnected to the .l 50 upper end of the vertically movable bar 48.

A rack segment 53 is secured to the arm 51 and the locking pin on thelever 52 is adapted to cooperate with said segment in the usual mannerto hold the lever in its adjusted position. A heavy coil spring 54 isattached at one end to the upper end of the pivoted bar 44 while theother end of said spring is connected to the vertically movablebar 48.As will be seen by reference I to Fig. 1, when the wood block W is inposition upon the feeding device, the same is securely clamped and heldbetween the lugs 47 and 49. A coil spring 55 has one of its ends securedto the floor and its other end 55 connected to the bar 44. This springnormally acts to move the block holder toward the cutting face of therotary disk. The holder may be readily moved away from the disk in orderthat a new block may be inserted by means of the lever 56 which isconnected to the bar 44 by a rod 57. This lever is provided with alocking dog for engagement with the rack 58, whereby the holder may beheld against movement by the action of the spring 55 after it has beenproperly adjusted with respect to the cutting disk.

Having now fully described the several structural features of mymachine, its operation will be understood as follows. Assuming that thewood blocks have been mounted in the holders upon opposite sides of thedisk shaft and properly positioned with respect to the cutting blades onthe disk, when said disk is rotated in the direction of the arrow, shownin Fig. 2, in the downward movement of the cutters upon one side of theshaft, the shredding bits 12 will first act upon a block which isarranged upon the upper end of the holder bar 44, the teeth 16 of saidbits cutting a. multiplicity of grooves in the face of the block. Theblade 10 immediately following the bits shaves or cuts the wood in fineshreds from the block face as a consequence of thus grooving the same.Before the block is entirely consumed, the cutting blades will engagethe periphery of the roller 50 which is loosely mounted and will readilyturn under the pressure of the blades against the same. This roller maybe constructed of wood or hard rubber so that it will not injure theknives nor itself be seriously damaged. This engagement of the roller 50by the cutting blades also serves as an indication to the operator thata new block must be provided. The wood blocks are substantiallyequivalent in length to one side of the polygon defined by thearrangement of the cutting blades in the face of the rotary 11 disk sothat as soon as one of the blades has performed its cutting action, thenext succeeding shredding bit and cutting blade will engage the block.In the upward movement of the shredders and the cutting blades on theopposite side of the disk shaft, the operation above described isrepeated upon the other block which is mounted between the peripherallygrooved rollers 23 and 26. i After each of the blades has performed itscutting action upon the block, one of the teeth 20 upon the face of thedisk will engage the roller 32 fixed upon the upper roller shaft 27 androtate said shaft, thus rotating the roller 26 slightly to move the woodblock, upon the upper end of which said roller is engaged, toward thecutting face of the disk. It will thus be seen that there is aprogressive automatic movement of the block toward the cutters as theblock is reduced in size in the operation of the machine. When the blockhas been largely consumed, the lever 4.2 is actuated to release thefragment thereof and a new block inserted in position between therollers.

From the above description, it will be appreciated that I have produceda highly serviceable and eflicient machine for cutting excelsior fromWood blocks, and one which requires but little attention upon the partof the operator and comparatively little power for its operation. Itwill, of course, be understood that either one of the block holdersabove described may be dispensed with if desired, or a larger number ofsaid holders than I have illustrated in the drawings provided. As theseveral parts of the machine are all of simple form, they may bereplaced when necessary at a small cost.

While I have above described the preferred form, construction, andarrangement of the several elements employed, it will be understood thatthe device is, nevertheless, susceptible of considerable modificationtherein, and I therefore reserve the privilege of resorting to all suchlegitimate changes as may be fairly embodied within the spirit and scopeof the invention as claimed.

What is claimed is:

1. In a machine of the character described, a rotary disk, a pluralityof cutters mounted upon said disk, a block holder arranged upon one sideof the rotary axis of the disk and including a pivotally mounted barhaving a socket in one end, manually operable means mounted in saidsocket for releasably holding a block in position on 1 said bar, and aspring connected to said bar and normally acting to move the blocktoward the cutting face of the disk.

2. In a machine of the character described, a rotary disk, a pluralityof cutters mounted upon said disk, a block holder arranged upon one sideof the rotary axis of the disk and including a pivotally mounted barhaving a socket in one end and a laterally projecting lug formed on thebar at the inner end of the socket, a block clamping member slidablymounted in said socket to engage a block and clamp the same upon saidlug, a lever connected to said clamping member to actuate the same, aspring connected to said bar and normally acting to move the same towardthe cutting face of the disk, and manually operable means connected tosaid bar to move the block away from the disk.

3. In a machine of the character described, a rotary disk, a pluralityof cutters mounted upon said disk, a block holder arranged upon one sideof the rotary axis of the disk and including a pivotally mounted barhaving a socket in one end, a spring held bar engaged in said socket,said pivoted bar being provided with a laterally projecting lug at thelower end of said socket to engage one end of the block, a lug upon saidspring held bar to engage and clamp against the other end of the block,a lever pivotally connected to the spring held bar to move the same anddisengage the clamping lug from the block, a guard roller mounted uponsaid pivoted bar and disposed beyond the block engaging lug thereon, aspring connected to said bar and normally acting to move the blocktoward the cutting face of the disk, and manually operable meansconnected to said bar to move the block away from the disk.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

WILLIAM A. WALKER.

Witnesses:

R. CLAY, E. E. MOSBY.

Gopies of this patent may be obtained for five cents each, by addressingthe Uommissioner of Patents, Washington, D. C.

